A researcher claims that drinking green tea improves memory because people who drink green twa score higher on memory tests. Which of the following, if true, most weakens the researcher's conclusion?

Green tea contains anuoxidants that are believed to support brain health.

Many green tea drinkers also regularly engage in mental exercises such as puzzles.

Memory tests are commonly used in cognitive research.

Green tea is popular in many countries.

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ব্যাখ্যা ও সঠিক সমাধান

উত্তর: Many green tea drinkers also regularly engage in mental exercises such as puzzles.

বিস্তারিত সমাধান